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Fill in the blanks: 1. The .......a.....

Fill in the blanks:
1. The .......a....... lymphoid organs provide the sites for interaction of lymphocytes with antigen, which then proliferate to become...b…
2. The thymus is a lobed organ located near the heart and beneath the ...C…
3.Spleen has a large reservoir of...d...

A

a-primary,b-antigen sensitive cells, c-collar bone, d-lymphocytes

B

a-secondary, b-receptor cells, c-breast bone, d-erythrocytes

C

a-primary, b-effector cells, c-breast bone, d-lymphocyte

D

a-secondary, b-effector cells, c-breast bone, d-erythrocytes

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The correct Answer is:
D
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Fill in the blanks The …..a……. Lymphoid organs provide the sites for interaction of lymphocytes with antigen which then proliferate to become …..b….. 2 . The thymus is a lobed organ located near the heart and beneath the ….C….. 3. Spleen has a large reservoir of .....d.....

Which of the following lymphoid organ does not provide the sites for the interaction of lymphocytes with the antigen, which then proliferate to become effector cells ?

Which of the following provide the sites for interaction of lymphocytes with the antigens ? A)Bone marrow B) Spleen C) Thymus gland D) Lymph nodes E) Appendix F) Peyer's patches of small intestine

The _________1_____________ is the main lymphoid organ where all blood cells _________2_____________ lymphocytes are produced. The _________3_____________ is a lobed organ located near the heart and beneath the breastbone. The _________3_____________ is quite large at the time of birth but keeps reducing in size with age and by the time puberty is attained it reduces to a very small size. Both _________1_____________ and _________3_____________ provide micro-environments for the development and maturation of T-lymphocytes.

Fill in the blanks: 1. By the end of the ….a… of pregnancy, the foetus develops limbs and digits. 2. By the end of ….b…, the body is covered with fine hair, eye -lids separate and eyelashes are formed. 3. After …c… of pregnancy, the embryo's heart is formed.

Fill in the blanks: (1) The. .. . . A .. . . Reproduction is the common mode of reproduction in organisms that have a relatively simple organisation like algae and fungi and they shift to . . . .. . B. . . Method of reproduction just before the onset of adverse conditions. (2) Asexual (Vegetative) as well as sexual modes of reproduction are exhibited by the . . ... ..c . . . . . (3) Only sexual mode of reproduction is present in most of the . .. .. . ..d. .... . . .

I) Primary lymphoid organs include .....A.....and .....B..... In these organs immature lymphocytes differentiate into antigen sensitive lymphocytes. After maturation, the lymphocytes migrate to ......C.... II) .....D..... is the site for the development and maturation of B-lymphocytes III) Thymus is the site for the development and maturation of .....E..... Here A to E refers to

Consider the following statements. I) Secondary lymphoid organs includes lymph nodes, spleen and small masses or lymph tissue such as Peyer's patches, appendix and thymus. II) The secondary lymphoid organs are the site of lymphocyte maturation and they efficiently trap antigens for exposure to T and B-cells. Which of the statements given above is/are correct?

Tissue which form the basic structure of lymphoid organs such as spleen is : (a) Lymphoid tissue (b) Cartilage tissue (c) Elastic tissue (d) Areolar tissue

Which organ is responsible for the secretion of the erythropoietin hormone? (a) Heart (b) Kidney (c) Spleen (d) Anterior pituitary

ALLEN-TEST PAPER 4-BIOLOGY
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  2. Blood transfusion is ……….. grafting.

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  3. Fill in the blanks: 1. The .......a....... lymphoid organs provide ...

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  4. Natural killer cells are type of-

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  5. MALT constitutes about percent of the lymphoid tissue in human body.

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  6. Sometime due to genetic and other unknown reasons, the body attacks se...

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  7. The immune system plays an important role in (a) Recognition of f...

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  8. Read the statements and choose the correct option. (I) Secretion of ...

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  9. Which of the following statements is correct ?

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  10. Fill in the blanks :

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  11. Which of the following factors affect human health ? (i) Infections ...

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  12. concept of crop-cafeteria and crop-scheduling was given by

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  13. Select the correct option :-

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  14. In gene therapy to treat adenosine deaminase deficiency disorder(SCID)...

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  15. Peyer's patches are found in

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  16. Lipopolysaccharides of gram-negative bacteria acts as endotoxin and ha...

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  17. The protection provided by the mucous membrane against pathogenic inva...

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  18. Consider the following four statements regarding kidney transplant and...

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  19. Mark the correct statements :- (a) Yoga has been preactised to achie...

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  20. Heath for a long time, was considered as a state of body and mind wher...

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